Chair base



FIG. 1 is a perspective view of a chair base, looking from the top thereof, showing my new design,

FIG. 2 is a top plan view thereof, drawn to a reduced scale,

FIG. 3 is a perspective view, looking from the bottom thereof,

FIG. 4 is a bottom plan view thereof, drawn to a reduced scale,

FIG. 5 is a sectional view corresponding to the line 5--5 of FIG. 1,

FIG. 6 is a sectional view corresponding to the line 6--6 of FIG. 1, and drawn to an enlarged scale,

FIG. 7 is an enlarged sectional view taken along line 7--7 of FIG. 6,

FIG. 8 is an enlarged sectional view taken along line 8--8 of FIG. 6,

FIG. 9 is a perspective view, showing another embodiment of my new design of a chair base, looking from the top thereof,

FIG. 10 is a top plan view thereof, drawn to a reduced scale,

FIG. 11 is a perspective view, looking from the bottom thereof,

FIG. 12 is a bottom plan view thereof, drawn to a reduced scale,

FIG. 13 is a sectional view, corresponding to the line 13--13 of FIG. 9,

FIG. 14 is a sectional view, corresponding to the line 14--14 of FIG. 9 drawn to an enlarged scale,

FIG. 15 is an enlarged sectional view taken along the line 15--15 of FIG. 14, and

FIG. 16 is an enlarged sectional view taken along the line 16--16 of FIG. 14. 

The ornamental design for a chair base, substantially as shown and described. 